Euphorbia help please

I have a group of three euphorbia and they are all not looking well. Any ideas please. I have a single one growing about four metres away(same conditions) and it's very healthy. I hope you can enlarge the photo cos I can't seem to manage it.
0
Posts
Oh it worked?
Last edited: 07 August 2017 23:24:28
Looks like it could be E. blackbird, in which case it needs full sun to give the nice dark leaves.
Cause he thinks she melts when he touches her
She knows she's the chocolate girl
Cause she's broken up and swallowed
And wrapped in bits of silver